Case for a smartphone



FIG. 1 is a front isometric view of a case for a smartphone;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dash-dash broken lines throughout the drawing figures depict portions of the case for the smartphone that form unclaimed subject matter. The broken lines and unshaded surfaces bounded by broken lines form no part of the claimed design. 

CLAIM The ornamental design for a case for a smartphone, as shown and described. 